/Engine/Source/Editor/SceneOutliner/Public/SSceneOutliner.h
Get the columns to be displayed in this outliner
const [TMap](API\Runtime\Core\Containers\TMap)< [FName](API\Runtime\Core\UObject\FName), [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [ISceneOutlinerColumn](API\Editor\SceneOutliner\ISceneOutlinerColumn) > > & GetColumns() const